A89/100
LAKE ARROWHEAD CSD — Water Quality Report 2026
Serving 7,038 people · California
Water Source
Surface Water
County
—
System ID
CA3610005
Violations
0
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFOA | 0.011 µg/L | 0.004 µg/L | Over Limit |
PFOS | 0.005 µg/L | 0.004 µg/L | Over Limit |
EPA Violation History
No violations in the past 5 years
This system has a clean compliance history.
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About LAKE ARROWHEAD CSD
Is LAKE ARROWHEAD CSD water safe to drink?
LAKE ARROWHEAD CSD water receives a grade of A (89/100), which is considered excellent. Out of 31 contaminants tested, 2 exceed EPA legal limits. 2 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has LAKE ARROWHEAD CSD detected?
31 contaminants were tested in LAKE ARROWHEAD CSD's water. Notable contaminants include PFOA, PFOS. 2 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does LAKE ARROWHEAD CSD have any EPA violations?
No, LAKE ARROWHEAD CSD has zero EPA violations on record. This indicates consistent compliance with federal drinking water standards.
How many people does LAKE ARROWHEAD CSD serve?
LAKE ARROWHEAD CSD serves approximately 7,038 people, California.
What type of water does LAKE ARROWHEAD CSD provide?
LAKE ARROWHEAD CSD sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is CA3610005.
How does LAKE ARROWHEAD CSD compare to other utilities in California?
LAKE ARROWHEAD CSD scores 89/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our California state page for a full comparison of water systems.